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    Dynamics in large scale networks

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    Author
    Clements, John
    Keyword
    large social network analysis
    dynamic network analysis
    graph motif
    vertex/node removal networks
    Motifs in the Barabási–Albert Algorithm
    
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    URI
    http://hdl.handle.net/10464/9238
    Abstract
    In this thesis we study the properties of two large dynamic networks, the competition network of advertisers on the Google and Bing search engines and the dynamic network of friend relationships among avatars in the massively multiplayer online game (MMOG) Planetside 2. We are particularly interested in removal patterns in these networks. Our main finding is that in both of these networks the nodes which are most commonly removed are minor near isolated nodes. We also investigate the process of merging of two large networks using data captured during the merger of servers of Planetside 2. We found that the original network structures do not really merge but rather they get gradually replaced by newcomers not associated with the original structures. In the final part of the thesis we investigate the concept of motifs in the Barabási-Albert random graph. We establish some bounds on the number of motifs in this graph.
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